flex 事件 一处分发，任意监听

代码：

 
 

package?com.evrnt ?
  
  
{ ?
  
  
????import?flash.events.Event; ?
  
  
????import?flash.events.EventDispatcher; ?
  
  
????import?flash.events.IEventDispatcher; ?
  
  
?
  
  
????public?class?InputEventDispatcher???{ ?
  
  
???????? ?
  
  
????????private?static?var?_inst:InputEventDispatcher; ?
  
  
????????private?var?eventDispatcher:IEventDispatcher; ?
  
  
???????? ?
  
  

????????public?function?InputEventDispatcher(target:IEventDispatcher?=?null){ ?

  
  

????????????eventDispatcher?=?new?EventDispatcher(target); ?

  
  
????????} ?
  
  
???????? ?
  
  
????????/**?获取FastReportEventDispatcher类的唯一实例?*/ ?
  
  
????????public?static?function?getInstance():InputEventDispatcher{ ?
  
  
????????????if(!_inst){ ?
  
  

????????????????_inst?=?new?InputEventDispatcher(); ?

  
  
????????????} ?
  
  
????????????return?_inst; ?
  
  
????????} ?
  
  
???????? ?
  
  
????????/**?添加事件侦听器函数?*/ ?
  
  

????????public?function?addEventListener(type:String,listener:Function,useCapture:Boolean=false,pririty:int=0,useWeakReference:Boolean=true):void{ ?

  
  
????????????eventDispatcher.addEventListener(type,listener,useCapture,pririty,useWeakReference); ?
  
  
????????} ?
  
  
???????? ?
  
  
????????/**?删除事件监听器函数?*/ ?
  
  

????????public?function?removeEventListener(type:String,priority:int=0,useWeakReference:Boolean=true):void{ ?

  
  
????????????eventDispatcher.removeEventListener(type,useCapture); ?
  
  
????????} ?
  
  
???????? ?
  
  
????????/**?事件派发函数?*/ ?
  
  
????????public?function?dispatchEvent(event:InputEvent):Boolean{ ?
  
  
????????????return?eventDispatcher.dispatchEvent(event); ?
  
  
????????} ?
  
  
???????? ?
  
  
????????/**?检查是否已经存在事件侦听器?*/ ?
  
  
????????public?function?hasEventListener(type:String):Boolean{ ?
  
  
????????????return?eventDispatcher.hasEventListener(type); ?
  
  
????????} ?
  
  
???????? ?
  
  
????????/**?检查eventDispatcher?对象或其他任何数组是否注册了指定类型的事件侦听器?*/ ?
  
  
????????public?function?willTrigger(type:String):Boolean{ ?
  
  
????????????return?eventDispatcher.willTrigger(type); ?
  
  
????????} ?
  
  
????} ?
  
  
}?
 
 

自定义一个类用来发送和监听事件，就可以实现在任意地方监听。